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-rw-r--r--preload-index.c78
1 files changed, 56 insertions, 22 deletions
diff --git a/preload-index.c b/preload-index.c
index 71cd243..c7dc3f2 100644
--- a/preload-index.c
+++ b/preload-index.c
@@ -5,16 +5,9 @@
#include "pathspec.h"
#include "dir.h"
#include "fsmonitor.h"
-
-#ifdef NO_PTHREADS
-static void preload_index(struct index_state *index,
- const struct pathspec *pathspec)
-{
- ; /* nothing */
-}
-#else
-
-#include <pthread.h>
+#include "config.h"
+#include "progress.h"
+#include "thread-utils.h"
/*
* Mostly randomly chosen maximum thread counts: we
@@ -25,16 +18,23 @@ static void preload_index(struct index_state *index,
#define MAX_PARALLEL (20)
#define THREAD_COST (500)
+struct progress_data {
+ unsigned long n;
+ struct progress *progress;
+ pthread_mutex_t mutex;
+};
+
struct thread_data {
pthread_t pthread;
struct index_state *index;
struct pathspec pathspec;
+ struct progress_data *progress;
int offset, nr;
};
static void *preload_thread(void *_data)
{
- int nr;
+ int nr, last_nr;
struct thread_data *p = _data;
struct index_state *index = p->index;
struct cache_entry **cep = index->cache + p->offset;
@@ -43,6 +43,7 @@ static void *preload_thread(void *_data)
nr = p->nr;
if (nr + p->offset > index->cache_nr)
nr = index->cache_nr - p->offset;
+ last_nr = nr;
do {
struct cache_entry *ce = *cep++;
@@ -58,6 +59,15 @@ static void *preload_thread(void *_data)
continue;
if (ce->ce_flags & CE_FSMONITOR_VALID)
continue;
+ if (p->progress && !(nr & 31)) {
+ struct progress_data *pd = p->progress;
+
+ pthread_mutex_lock(&pd->mutex);
+ pd->n += last_nr - nr;
+ display_progress(pd->progress, pd->n);
+ pthread_mutex_unlock(&pd->mutex);
+ last_nr = nr;
+ }
if (!ce_path_match(index, ce, &p->pathspec, NULL))
continue;
if (threaded_has_symlink_leading_path(&cache, ce->name, ce_namelen(ce)))
@@ -69,55 +79,79 @@ static void *preload_thread(void *_data)
ce_mark_uptodate(ce);
mark_fsmonitor_valid(ce);
} while (--nr > 0);
+ if (p->progress) {
+ struct progress_data *pd = p->progress;
+
+ pthread_mutex_lock(&pd->mutex);
+ display_progress(pd->progress, pd->n + last_nr);
+ pthread_mutex_unlock(&pd->mutex);
+ }
cache_def_clear(&cache);
return NULL;
}
-static void preload_index(struct index_state *index,
- const struct pathspec *pathspec)
+void preload_index(struct index_state *index,
+ const struct pathspec *pathspec,
+ unsigned int refresh_flags)
{
int threads, i, work, offset;
struct thread_data data[MAX_PARALLEL];
- uint64_t start = getnanotime();
+ struct progress_data pd;
- if (!core_preload_index)
+ if (!HAVE_THREADS || !core_preload_index)
return;
threads = index->cache_nr / THREAD_COST;
- if ((index->cache_nr > 1) && (threads < 2) && getenv("GIT_FORCE_PRELOAD_TEST"))
+ if ((index->cache_nr > 1) && (threads < 2) && git_env_bool("GIT_TEST_PRELOAD_INDEX", 0))
threads = 2;
if (threads < 2)
return;
+ trace_performance_enter();
if (threads > MAX_PARALLEL)
threads = MAX_PARALLEL;
offset = 0;
work = DIV_ROUND_UP(index->cache_nr, threads);
memset(&data, 0, sizeof(data));
+
+ memset(&pd, 0, sizeof(pd));
+ if (refresh_flags & REFRESH_PROGRESS && isatty(2)) {
+ pd.progress = start_delayed_progress(_("Refreshing index"), index->cache_nr);
+ pthread_mutex_init(&pd.mutex, NULL);
+ }
+
for (i = 0; i < threads; i++) {
struct thread_data *p = data+i;
+ int err;
+
p->index = index;
if (pathspec)
copy_pathspec(&p->pathspec, pathspec);
p->offset = offset;
p->nr = work;
+ if (pd.progress)
+ p->progress = &pd;
offset += work;
- if (pthread_create(&p->pthread, NULL, preload_thread, p))
- die("unable to create threaded lstat");
+ err = pthread_create(&p->pthread, NULL, preload_thread, p);
+
+ if (err)
+ die(_("unable to create threaded lstat: %s"), strerror(err));
}
for (i = 0; i < threads; i++) {
struct thread_data *p = data+i;
if (pthread_join(p->pthread, NULL))
die("unable to join threaded lstat");
}
- trace_performance_since(start, "preload index");
+ stop_progress(&pd.progress);
+
+ trace_performance_leave("preload index");
}
-#endif
int read_index_preload(struct index_state *index,
- const struct pathspec *pathspec)
+ const struct pathspec *pathspec,
+ unsigned int refresh_flags)
{
int retval = read_index(index);
- preload_index(index, pathspec);
+ preload_index(index, pathspec, refresh_flags);
return retval;
}